Examine the map of South American physical regions. A color-coded map of South American physical regions. A is labeled in Brazil near a river. Which geographical feature is found throughout region A? desert mountain rainforest grassland

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explanation:

since the crust is readily accessible, scientists have been able to perform hands-on experiments to determine its composition; studies on the more distant mantle and core have limited opportunities samples. so scientists also rely on analyses of seismic waves and gravity and as well as magnetic studies.